In my test flip-book, the first/last pages content only shows in one half of the book. so at the very beginning and the end if the book I have and empty white space/page. Is there a way of placing content in those two spots?

Me bothering again. I couldn't get the dropdowns to work. So I tested offline with a different theme and they worked fine. So I replaced the theme and now the dropdowns work just fine. But the flip book doesn't show any more... I can browse to it by using the actual URL